Motion
Newton's First Law
Newton's Second Law
Newton's Third Law
Gravity
100
the distance and direction between a start and end point
displacement or an objects path
100
What is Newton's 1st Law of motion?
An object at rest/in motion will remain at rest/in motion unless acted on by an unbalanced force
100
According to Newton's 2nd Law, what does the acceleration of an object depend on?
net force acting on the object and the mass of the object
100
What is Newton's 3rd Law?
for every action there is an equal and opposite reaction
100
what type of force is gravity?
long-range force
200
What is the speed of a helicopter that travels 1400 km in 7 hours?
200 km/hr
200
What is a force?
push or a pull
200
A force of 64 Newtons is applied to an 8 kg bowling ball. What is the acceleration of the bowling ball?
8 m/s/s or 8 meters per second squared
200
action: pull a canoe paddle in water towards the back reaction: ??
the canoe moves forward
200
What is acceleration due to gravity of all objects on Earth?
9.8 m/s/s or 9.8 meters per second squared
300
How can an object accelerate?
speed up, slow down, change direction
300
Does a boulder have more or less inertia than a stone? Why?
more inertia because it has more mass
300
If you want two objects with difference masses to have the same acceleration, the object with the larger mass will require a __________ force.
larger force
300
How do you know the reaction is equal to the action when you are sitting in a chair?
You do not fall through the chair onto the ground
300
What does gravitational force depend on?
distance of the objects and mass of the objects
400
you can use reference points to describe this type of motion
relative motion
400
What is the net force of balanced forces acting on an object?
zero, the balanced forces cancel each other out
400
What type of fiction allows an object to stay at rest?
static friction
400
How can you use Newton's 3rd Law to jump in the air?
you push on the ground and the ground pushes back up on you with the same force
400
Are mass and weight different? Why?
yes, weight depends on the pull of gravity and can change if distance from the center of the Earth changes
500
what is the difference between speed and velocity?
velocity is speed in a given direction
500
What might happen if a driver of a car slams on the brakes, and you weren't wearing your seatbelt?
You would keep traveling forward through the windshield
500
What type of friction applies a force in the direction the object is moving?
rolling friction
500
When you push on a door, the door also exerts a force on you. Why doesn't this force make you fall down?
static friction between your feet and the floor keeps you from sliding and falling down
500
Do you exert a gravitation force on the Earth? Why?
yes, anything that is made of matter and has a mass exerts a gravitational force
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